Pioneer CDJ-2000 Service Manual page 34

1
A [8] CONTROL
[8-1] Improper fader operation after fader start
No. Cause Diagnostics Point
Loose connections
1 JACB Assy
in the signal line.
Defective
2 MAIN Assy
MAIN CPU
B
[9] DRIVE ASSY
[9-1] Improper operation of the loading mechanism
No loading
No. Cause Diagnostics Point
Missing or Loading
1
defective part mechanism
Loading
Loose connections
2
in the signal line. mechanism
Loading
Improper
3
mechanism
assembling
C Loading
Improper
4
mechanism
soldering
Power supply
5 SRVA Assy
error
LPS1 and LPS2
6 SRVA Assy
signal errors
MUTE1 and
7 SRVA Assy
MUTE2 signal
errors
D
LOAD signal
8 SRVA Assy
error
Defective SRVA
9
Assy
[9-2] The stepper does not work.
No. Cause Diagnostics Point
The main unit is
1 Main unit
positioned inclined.
Improper Traverse
2
assembling
mechanism
E
Improper Traverse
3
assembling mechanism
Power supply
4 SRVA Assy
error
INSW signal
SRVA Assy
5
error
6 MU1 signal error SRVA Assy
F
Improper
7
assembling
34
1
2
Item to be Checked
Check the waveforms of the control signals
(CONT1, CONT2) from the CN9401 on the
JACB Assy.
Check the waveforms of the control signals
(CONT01, CONT02) from the MAIN Assy.
Item to be Checked
Check that there is no part missing or
defective.
Check that the LP switch has been
mounted.
Check that the lever is engaged with the
LP switch.
Check that the wires from the loading
motor have been properly soldered.
Check the power voltages (12 V, 5 V,
3.3 V, and 1.5 V).
Check the waveforms of the LPS1 and LPS2
signal lines. (The LPS1 and LPS2 signals
becomes L when the SW is set to ON.)
Check the waveforms of the MUTE1 and
MUTE2 signals. (During loading, the MUTE1
signal is L and the MUTE2 signal is H.)
Check the LOAD signal.
If the symptom persists after the above
-
corrections,
Item to be Checked
Check if the main unit is positioned inclined. Place it on a level surface.
Check if there is a missing or defective part
at the section where the main axis and
stepper contact.
Check the inside switch.
Check the power voltages (12 V, 5 V,
3.3 V, 1.5 V, VREF1, VREF2 and VHALF).
Check the INSW signal. (The INSW
becomes L when the INSW is set to ON.)
Check that the MU1 signal becomes H
after loading is completed.
Check that the FPC cable that connects the
Cables
traverse mechanism and the SRVA Assy is
securely connected.
2
3
Corrective Action
If the signal cannot be recognized, the JACB Assy
may be defective. Check the soldering at the JACB
Assy then resolder it, if necessary.
If the signal can be recognized, go to Step 2.
If the input signal can be recognized, then the MAIN
CPU (IC101) may be defective. Replace it. If the input
signal cannot be recognized, the communication line
or the peripheral devices may be loosely connected.
Resolder the terminals.
Corrective Action
If there is, install the missing part or replace the
defective part.
If soldering is improper, resolder it.
Engage the lever with the LP switch.
If they are not soldered, solder them.
Check the connection of the parts at the periphery of
the power-supply IC that does not output the voltage.
If the symptom persists after a corrective action, the
power supply block is defective. Replace it.
The loading detection SWs (S8901 and S8902) may
be improperly soldered or defective. Resolder them,
if necessary. If the symptom persists, replace them.
DRIVER IC (IC7001) and SODC (IC7006) may
be improperly soldered or defective.
Resolder them, if necessary. If the symptom persists,
replace SODC (IC7006).
DRIVER IC (IC7001) and SODC (IC7006) may
be improperly soldered or defective.
Resolder them, if necessary. If the symptom persists,
replace SODC (IC7006).
Replace the SRVA Assy.
Corrective Action
If there is, install the missing part or replace the
defective part.
Assemble the INSW Assy properly.
Check the connection of the parts at the periphery of
the power-supply IC that does not output the voltage.
If the symptom persists after a corrective action, the
power supply block is defective. Replace it.
The FFC cables that connect the traverse mechanism,
SPCN, and SRVA are loosely connected, or the INSW
is defective. Reconnect them securely.
If the symptom persists, replace the INSW.
DRIVER IC (IC7001) and SODC (IC7006) may
be improperly soldered or defective.
Resolder them, if necessary. If the symptom persists,
replace SODC (IC7006).
If it does not, securely connect it. If it is broken,
replace the traverse mechanism.
CDJ-2000
3
4
Reference
10.6
JACB ASSY
10.4 MAIN
ASSY (2/3)
Reference
10.1 SRVA
ASSY (1/2)
5.4 Operational
Waveforms
10.1 SRVA
ASSY (1/2)
10.1 SRVA
ASSY (1/2)
5.4 Operational
Waveforms
Reference
10.1 SRVA
ASSY (1/2)
10.1 SRVA
ASSY (1/2)
4